The replacement trans mounts are about 3/4 of an inch taller than the original ones. I do not know how to get one that is the correct height. I took the shims out from under the mount, and it was still a little tall. I also removed the bracket for the tailpipe from under the trans mount. The trans was against the tunnel, and I barely got it in. The guy who rebuilt my 91's trans used one that is bolted from the bottom instead of having studs in it. I think I have seen them at the local Autozone in their specialty isle. I can stop by and ask him what part he used. Even with the one he used, the shims are still out. You should measure the original one, and then the replacement. It may take a little experimenting to find the correct height.